20021022110101 has 4 divisors (see below), whose sum is σ = 20021031341100. Its totient is φ = 20021012879104.

The previous prime is 20021022110039. The next prime is 20021022110129. The reversal of 20021022110101 is 10101122012002.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 9566463420900 + 10454558689201 = 3092970^2 + 3233351^2 .

It is a cyclic number.

It is not a de Polignac number, because 20021022110101 - 2⁷ = 20021022109973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021022110801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 609495 + ... + 6357163.

It is an arithmetic number, because the mean of its divisors is an integer number (5005257835275).

Almost surely, 2^{20021022110101} is an apocalyptic number.

It is an amenable number.

20021022110101 is a deficient number, since it is larger than the sum of its proper divisors (9230999).

20021022110101 is an equidigital number, since it uses as much as digits as its factorization.

20021022110101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9230998.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20021022110101 its reverse (10101122012002), we get a palindrome (30122144122103).

The spelling of 20021022110101 in words is "twenty trillion, twenty-one billion, twenty-two million, one hundred ten thousand, one hundred one".